Urethane Spring [Overview]
Pressure Source Components■ Application Example［Type X&A］
Urethane spring USA and USX for

For operation with single stage springpress tools use polyester based casthd8

urethane elastomer which is heat

Guide Pin

hd4

resistant. It is excellent in repeatedShoulder Bolt

compression. It also has high impact

Stepped Bushinghd10

resilience, impact resistance, weather
resistance, and load resistance. It is

hd3

hd1

the optimum product for pad pressure

Retainerhd2

source of press tools.
R■ Features・Since material is hard and elastic, it is excellent in impact resistance and shows a strong
performance as a spring.
Material Characteristics

Performance Values

MaterialPolyester Based

For operation with double stage spring
DETAIL R

Shore A90°
HRS45°

ColorWasher

Navy blue

Tensile Strength
Modulushd6

59 MPa100％

7.53 MPa300％

15.2 MPa

hd7
Pressure Source
Components

Hardness

hd5

Elongation

510%

Tensile Strength

109 N/mm

Impact Resistance

28%

hd9

■Range of Application

Dimension Table (mm) [Type A]

USA

Deflection Rate
Limit for Operation
25%

SPM
Limit for Operation
50SPM

USX

30%

40SPM

Ambient Temperature
Limit for Operation
50℃Specification limit SPM varies depending on the deflection ratio. Please contact our sales representatives for details.

Urethane Spring

Guide PinWasherOthers

H d1

Hd 2

Hd 3

Hd4

Hd 5

Hd 6

Hd7

Hd 8

Hd 9

USA4040

1448

12M1065131468

Hd1060

USA80

80

2296

18

M161002122116100

For USX, use guide pin h12 for urethane diameter h50 or smaller and h18 for urethane diameter h60 or larger.

■Storage・In order to protect against ultraviolet rays, store away from direct sunlight.
・Deterioration is faster under conditions of high temperature or humidity.
We recommend putting a desiccant in the container and storing in as cool a location as possible.
For use under high temperature and humidity conditions, we recommend URESTORO (P.1171),which has excellent hydrolysis performance.
1151

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■ Conditions for Use
・Use at or below the stated deflection ratio.
・The urethane spring seating surface requires an external diameter of > 20 mm.
・The clearance around each spring must be sufficient to prevent any contact with theneighboring components.
・Exposure to ultraviolet and sunlight must be avoided.
・Guide pins should be S25C equivalent or better and finished within Ra1.6.

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1152

Urethane SpringHigh Load Counterbore Hole Type
Pressure Source Components
hD
hd1

Catalog No.

DUSZL

30
405060708090100hD

hd

L

H− 00.3

H− 00.3

L

hd1

Catalog No.

DUSZLK

405060708090100hd

USZLK (with Retainer)
hD
hd1＋0.50hD

K (Retainer)

hd ＋ 0.10hd2
L/D=2 or less is recommended.
K (Retainer)
hd − 00.3＋ 1.0

T H＋ 0.5＋ 1.0

hd2

H− 00.5hd2
hd − 00.3

H＋ 0.5

T H− 00.5

TLhD1ThD1L

hd1＋0.50H
1 mm increments

dd1

Applicable Bolt

20〜100＊1

914

M825〜150＊1

1118M101420M125≦H＜L
25〜200＊1L
1 mm increments

35〜150＊1

35〜200＊1

dd1

d2

D1T

H

ApplicableBolt

1520

1119.5

512M1018221322620M12

Catalog No.

DLH

USZL
USZLK

50706585

20＊1 ・When using D=40, 50 L<40 mm, D=60 to 100 L<55 mm, be careful of interference between retainer
mounting bolts and urethane spring receiving seat surface.
Please take measures such as relief processing on the urethane spring receiving seat surface.
・Note that products with short L dimensions may not ensure a maximum deflection ratio of 25%.

Clearance

Upper diehd2
hd ＋ 0.1
0〈Material〉Polyester based1165

L1 mm increments

Pressure Source
Components

USZL

Urethane

Lower dieRefer to page 1192 for attached retainer size.

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1166

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Urethane Spring

USZLK Load-Deflection Diagrams
Pressure Source Components
Initial10,000 Strokes

100,000 Strokes

207766161655121234322110369120154481216020

USZLK50-60

842.5

Deflection (mm)Deflection (mm)57.5

1012.50USZLK50-100

USZLK70-110

12122828242420

20644220369

Deflection (mm)1215

Load (kN)

Load (kN)

6051015

Deflection (mm)2025

Load (kN)

3281612203442.5

128445.516168012

USZLK70-170

32108

Deflection (mm)1484

Deflection (mm)1410Load (kN)

81116.5

Deflection (mm)2227.508.5

1725.5Pressure Source
Components

4Load (kN)

USZLK60-80

20Load (kN)

USZLK60-50

8Load (kN)

USZLK40-80

8Load (kN)

USZLK40-60

300,000 Strokes

Deflection (mm)11671168

Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.

Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.

Urethane Spring

USZLK Load-Deflection Diagrams
Pressure Source Components
Initial35353030252520152015101055481216020550454540403535303025202025605050404030302020101004812

Deflection (mm)16200612182430

Deflection (mm)25201515101055715

USZLK100-12060

USZLK90-20050

Load (kN)

Load (kN)

USZLK90-140

010

Deflection (mm)Deflection (mm)300,000 Strokes

1421

Deflection (mm)2835010203040

Pressure Source
Components

0

USZLK100-80

100,000 Strokes

Load (kN)

40Load (kN)

USZLK80-100

40

Load (kN)

Load (kN)

USZLK80-80

10,000 Strokes50Deflection (mm)11691170

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hD
hd1＋0.5
0Retainer, Spacer
Pressure Source Components
SORTA

K

K (Retainer)

hd ＋ 0.1
0L2＋ 1.0

hd2

LCatalog No.

H＋ 0.5H− 00.5

hD

hd
115°
L1T

hD1T

R2

L45°

hd − 00.3〈Material〉SS400 or S25C

Nominal

L141020

SORTA

D1630

2022223524d913

Catalog No.

Nominal

LSORTA

2030

L1L22337510

Applicable Rubber Spring, Urethane Spring
Outer Diameter

Length30, 40〜4030n63

hd2〈Material〉SS400

Catalog No.

Nominal

D1K101219.5

15221850n63dd2

HT

111251320660n12560n60n120

Catalog No.

Nominal70n10060n200K

10SOIS1C

2-

310

hD2hdhD

hD15hd0.

C

Pressure Source
Components

2-SORTB

10hD〈Material〉Neodel(#25-61N)

730〈Material〉SS400 or S25C

Catalog No.

Nominal

D

D1

D2d

Outer Diameter

SORTB

1422191314950632720221380

100

When installing SORTB, set the straight part to the fixed surface side.

Catalog No.

Nominal

D65SOIS50638010080100125d1321

Applicable Rubber Spring, Urethane Spring
Outer Diameter
3040606370809010050

Inner Diameter

Guide Pin Diameter

141220110

2220

Guide pins should be S25C equivalent or better and finished within Ra1.6.

Catalog No.

NominalCatalog No.

NominalSORTB

14SOIS

6311911192

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Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.